Emile, I cannot understand how a clever person will Scuba dive in 1 degree. I think you are crazy. J You will never find me in under 10 degrees. However it is nice to know that the equipment works in those temperatures. Happy new year, Hugh From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Emile van Essen Hugh, The number 1 or 4 is the number of low pressure ports. 1 LP port is needed. We monitor the content of the bottle with a gauge outside . To be viewed trough the the dome. This saves throughhulls and plumbing. Cheers, Emile Ps. The Apeks is also good in cold water; I dived yesterday SCUBA in water of 1 Deg. Celcius. : no freezing problems but sub dives are warmer….. Van: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] Namens Hugh Fulton Thanks Emile and Sean, I have never come across Apeks but just googled it and now better informed. I will go with Apeks 1st stage. What is the difference between DS1 and DS4? I like the idea of all regs outside with secondary regs inside, if required, for oxygen where constant pressure for constant flow is required. I am looking for a small panel mount second stage now. The only problem with regs outside is you need another 2 ports for contents monitoring. I am a bit short of through hull’s. I have 12 x ¼”npt and 10 x ½” npt and 2 x 1” npt. I thought that would have been heaps. I have finally had my hull tested at 515 ft with windows in and now fitting the hull to the fibreglass fairing. Getting closer. Chs, Hugh From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Sean T. Stevenson I just want to second the endorsement of Apeks SCUBA regulators. I have used many different makes and models over the years, and the Apeks are the only ones I never regretted purchasing. I have several DS4's and a couple of the newer ones, and will no longer buy anything else. Hugh, You mean the dive tank regulators right ? They reduce the pressure to about 10 Bar over ambient. If you have them inside, You cannot blow tanks when you are deeper than 100 Metres (=10 Bar) So better store tanks an regulators outside on a 1ATM sub. For oxygen no difference but store outside saves room inside… I Like the Apeks DS1 or DS4 but any rugged and common regulator will do the job. Emile Van: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] Namens Hugh Fulton Placement of regulators and choice of them. For Air and oxygen. Is it best to have the regulators inside or outside the pressure hull? I noticed that some have the regs outside and others inside. What brand/models have people found the best? Hugh
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